In the Calendar control, you can hide the weekend using Days=5 (assuming that StartDate is the first day of week).
In the Scheduler control, you can hide the weekend using ShowNonBusiness=false.
In the Month control you can hide the weekedn using ShowWeekend=false.
You can also deny the move/resize/create operation in the respective event handler (e.g. EventMove, EventResize, TimeRangeSelected).